andrews



(No Model.)

win. ANDREWS.

PUMP.

No. 306,798. Patented 00t.'21, 1884.

lhvrrnn terns ATENT trier...

\VILLIAM D. ANDPEW'S, OF BROOKHAVEN, NEIV YORK.

PUM P.

SPECIFICATION forming part of Letters Patent No. 306,798, datedOctober 21, 1884.

Application filed February 25, 1884.

To all whom it 11w, concern.-

Beit known that 1, WILLIAM 1). Annnnws, of Brookhaven, in the county of Suffolk, in the State of New York, have invented a new and useful Improvement in Pumping-Machines, of which the following is a specification.

Myimproved pump or pumping machinery is more particularly intended for elevating water from a well or watertight reservoir which is supplied with water from a large number of tube wells or driven wells arranged and connected as shown in my several applications for Letters Patent, which are numbered 122,026, filed February 25991884, 122,276, filed February 28, 1884, and 122,277, filed February 28, 1884; but the invention is in whole or in part applicable to pumps for raising water from any pond, stream, or other source of supply, and particularly from wells or bodies of water which are considerably below the level at which the actuating mechanism oi' the pump is placed.

In carrying out my invention I einploya single piston in a working-barrel, or two pistons and operating mechanism for moving them simultaneously toward and from each other. In both cases the water all passes through the piston or pistons in which are suitable valves.

My invention consists in the combination, with an upright cylinder or casing having a working-barrel fitted to its lower part and open at the top, or closed and provided with a discharge-pipe, of a piston consisting of an annular body fitting the working-barrel and provided with valves, and an upward tubular extension, which is preferably made flaring toward the top, and is also provided with valves. By this construction I obtain a'valvearea in the piston nearly double what could be obtained if the valves were all inthebody of the piston, and consequently the water is moved with less friction and greater economy. When the two pistons are formed with hollow or tubular extensions, the lower piston will have a downward extension, made downwardl y flaring, and extending to a point below the lower end of the workingbarrel, as will be more fully hereinafter described.

In the accompanying drawings, Figure 1 is (No model.)

a vertical section of a pump embodying my invention and having two pistons. Fig. 2 is a side elevation of the upper portion of the upright cylinder or casing, and mechanism for operating the two pistons. Fig. 3 is a plan of the parts shown in Fig. 2. Fig. 4 is a plan, on

a larger scale, of the extension valve-seat of the sponding parts in all the figures.

A designates the upright cylinder or casing, which may be of east-iron, made in sec tions, which are secured together by flanged joints a. The top of this cylinder or easing may be closed or open, according to whether or not the pump is to be used to force the water above the upper end of said casing 0r cylinder. I11 this example of my invention the cylinder or casing A is closed at the upper end by a head, A, and immediately below said head is provided with a dischargeoutlet, I), to which a dischargepipe may be connected. the outlet I) is coincident with the under side of the head, no air will accumulate below said head. lVhen the upper end of the cylinder or casing A is open, the discharge may be through an ordinary pitcher-spout outlet. At the exterior of the cylinder or casing are flanges or brackets a, by which it is supported, and at the lower end thereof is a -working-barrel, B, which projects below the lower end of the cylinder or casing, and is supported through a flange, c, at its upper end, resting upon a shoulder on the cylinder. The flange 0 may be bolted to the cylinder, if desired; but when two pistons are employed there will be no great tendency to move the barrel, because the friction exerted by the moving pistons will act simultaneously in opposite directions.

0 D designate the two pistons, consisting each of an annular body, which is fitted to the working-barrel B, and may be provided with any suitable packing, and a tubular or hollow Inasmuch as the upper side of extension, (I, which is made flaring in a direc tion away from the body, and the closed end of which forms avalve-seat, d. The extension (Z of the upper piston, 0, extends upward, and at adistance from the piston is made upwardly flaring to nearly the diameter of the piston it self, and both its valvcseat (l and the annular body of the piston itself are furnished with numerous valves I. By this construction of piston I provide a very large valve-area and enable the water to be moved with comparatively little friction. The extension (I of the lower piston is downward, and at a distance from the piston said extension flares downward to near the diameter of the body of the piston. The annular body of the lower piston, l l, and the valve-seat d of its extension are furnished withninnerous valves c. The extensions of the two pistons D and (-1 extend to such a distance above and below them that they never enter the working'barrel L, and therefore do not obstruct the ingress of water through the annular body of the piston I) nor its egress through the body of the piston O. The cylinder A above the working-barrel B is enlarged to afford provision for the ilow of water past the extension of the upper pis ton,

l ig. -t represents the valve-seat d of the upper piston, C and Pi g. 5 represents the annular body of such piston, the extension being shown in transverse section.

The valves employed may be of any suit;- able construction.

In Fig. 6 I have re )lCSGlllCd a desirable form of valve.

The valve 0 is capable of rising bodily on a stem, 0', which is fixed in a yoke, 0*, extending downward :from the seat, and is closed or returned by a spring, (1, upon the stem, secured between the valve and a thumb-nut, c, where by the tension of the spring may be varied. The upper piston, (l, is operated by two rods, 0 G, which extend upward through stuffing boxes fin the head A, and the lower piston,

l), is operated by a single piston-rod, 1'), ex-- tending upward through a tube or sleeve, g, projecting from the upper piston, t, and through a stalling-box, The tube or sleeve in combination with the rod I), aids in guiding the two pistons and prevents any buckling or bending of the single long rod 1).

At opposite sides of and above the cylinder A are rock-shafts Cf 1'), supported in bearings 71. and on the shaft C are two bell-crank levers, C, the horizontal arms of which are connected with the piston-rods O C.

()n the shalt 1) is a bell-crank lever, I)", the l1orizontally-exteuding arm of which is connected with the piston-rod D of the lower piston, I). The upward]y-extending arms of the bell-crank levers G are connected by a rod, 2', with the corresponding arm of the lever 1')", an d to the said arms of the levers t) is connected a rod, i, which receives motion from a crankshaft, j, operated by an engine, 7..

This on gine may be of any usual or suitable construction.

I have only shown one example of mechan' ism for producingthe simultaneous movement of the pistons O and D; but other combinations of parts may be used for this purpose.

It is advantageous to have the workingbarrel B readily removable from the cylinder A, as it can then be taken out for repairs, for renewal, or to substitute one larger or smaller, as eircmnstances may require. To this end the working-barrel is made of such size that it may be readily slipped down through the cylinder to its place at the lower end thereof. The lower end of the casing or cylinder A, or at least the end of the working barrel. B, should extend downward below the surface of the water from which the pump takes the supply; but when only the piston G is used the lower piston, 1), should be replaced by a i'oot valve. \Vherc two pistons are employed, the water all passes through each piston during its downward stroke, be ing impelled upward by the simultaneous up ward movement of the other. There being no reverse motion in the water, the impetus it acquires insures a rontinuous,if slightly decreased, upward and onward movement, even when the pistons are momentarily stationary at opposite ends of their strokes.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, with an upright cylinder or casing having at its lower part a working-barrel, of a piston consisting of an annular body provided with valves, and an up ward tubular extension also provided with valves, substantially as herein described.

'2. The combination, with an upright cylin' der or casing having at its lower part a workiug-lmrrel, of a piston fitting said working-barrel, and consisting of an annular body provided with valves and an n pwardly-ilaring tubular extension forming a valveseat, d, substantially as herein described.

:5. The combination, with an upright cylinder or casing and a working-barrel iitted to the lower end thereof, and capable of being introd need and removed through said cylinder or casing, of a piston consisting of an annular body provided with valves and an upward tubular extension also provided with valves, substantially as herein described.

4. The combination, with the cylinder or casing A, havingat its lower part a workingbarrel, ll, and having above said barrel an annular enlargement, of the piston consisting of an annular body provided with valves,and an upwardly-flaring tubular extension also provided with valves, substantially as herein described.

5. The combination, with an upright cylinder or casing having at its lower part a working-barrel, of two pistons consisting of annular bodies provided with valves, and upward and downward tubular extensions also provided with valves, substantially as herein deing extension and valve-seat (Z d, and niechan- 1o valvular piston, D,having a downwardly-flarscribed. ism for moving said pistons simultaneously 6. The combination, with the cylinder or I toward and from each other substantially as casing A and the removable workingliarrel herein described.

B, the cylinder having an annular enlarge- 7 p T ment above said working-barrel, of the upper A) valvular piston, 0, having an upwardly-flar- 1 ing' extension and valve-seat d d, the lower \Vitnesses:

SARAH N. PARsHALL, FREDK. HAYNES. 

